459891621 has 32 divisors (see below), whose sum is σ = 780108800. Its totient is φ = 262303920.

The previous prime is 459891583. The next prime is 459891631. The reversal of 459891621 is 126198954.

It is not a de Polignac number, because 459891621 - 2¹⁴ = 459875237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (459891631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115026 + ... + 118956.

It is an arithmetic number, because the mean of its divisors is an integer number (24378400).

Almost surely, 2^459891621 is an apocalyptic number.

It is an amenable number.

459891621 is a deficient number, since it is larger than the sum of its proper divisors (320217179).

459891621 is a wasteful number, since it uses less digits than its factorization.

459891621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566 (or 4560 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 459891621 is about 21445.0838422236. The cubic root of 459891621 is about 771.8836331401.

The spelling of 459891621 in words is "four hundred fifty-nine million, eight hundred ninety-one thousand, six hundred twenty-one".